Twisting fastener



FIG. 1 is a front elevational view of the twisting fastener showing my new design, the rear being a mirror image thereof;

FIG. 2 is a side view taken from the right of FIG. 1, the side opposite being a mirror image thereof;

FIG. 3 is a perspective view in the interlocked position. 

The ornamental design for a twisting fastener, as shown. 